Specification: Material: Polyurethane, Stainless Steel Color: Gold Tone, Black, Clear Bridge Tube Inner Diameter: 9mm/0.35\" Bridge Tube Length: 64cm/25.1\" Bridge Tube Outer Diameter: 10mm/0.39\" Fill Hose Thread Size: 1/4 NPT Fill Hose Hole Diameter: 8mm/0.31\" Fill Hose Length: 66.7cm/26.2\" Fill Hose with Screw Cap Diameter: 26mm/1.02\" Fill Hose with Screw Cap Outer Diameter: 12mm/0.47\" Fitment: Fits Seastar inboard and outboard hydraulic steering systems. Used to refill the steering fluid in your boat. Basic Instructions: 1. Attach bottle to steering reservoir (do not puncture bottle) (do not allow bottle to run empty). 2. Connect bridge tube to steering cylinder fittings and loosen fittings. 3. Use steering to pump fluid through system by turning wheel in one direction. Air bubbles will be pushed to the reservoir at the steering. 4. Manually swing outboard engine through full motion to release entrapped air. 5. Note: Directing the fittings upward while pumping fluid with the steering will allow air to exit the cylinder. 6. Repeat steps 3-4 as many times as needed until no air is visible in the bridge tube. 7. Tighten fittings before removing bridge tube. Package Content: 1 x Bridge Tube 1 x Fill Hose with Screw Cap